REGULAR SERIES 



17. Report of Test of Vertical Steering Control of U.S. Submarine S-3, Using 



"Drowned" Bow Rudders with Guards, from Experiments with Model No. 

 1966. Aug 1920. 4 pp., 2 figs. 



18. Report of Rolling Experiments on Model No. 2300 Representing U.S. Aero- 



plane Carrier LANGLEY (Formerly U.S. Collier JUPITER). Sep 1920. 1U 

 pp., 8 figs. 



19. Report of an Analysis of the Standardization Trials of Some Recent De- 



stroyers. Sep 1920. 5 pp., 1 fig. 



20. Report of Test of Vertical Steering Control of U.S. Submarines - BB-1 to 



9 (S-163-171) from Experiments with Model No. 2341. Sep 1920. 5 pp., 3 

 figs. 



21. Report of Experiments with Twin Floats for Loening M-81 Seaplane (Origi- 



nal and Modified Step Position). Nov 1920. 8 pp., 5 figs. Distributed 



only upon authorization of Loening Aeronautical Engineering Corporation. 



22. Report of Experiments with Twin Floats for Curtiss C.T. Seaplane. Jan 



1 921 . 8 pp. , 5 figs. Distributed only upon authorization of Curtiss Engineering 

 Corporation. 



23. Report of Experiments with Twin Floats for Loening M-81 Seaplane (2nd 



and 3rd Modifications Represented by Model 23^6) (4th Modification 

 Represented by Model 2371). Feb 1921. 13 pp., 8 figs. Distributed 



only \spon authorization of Loening Aeronautical Engineering Corporation. 



24. Preliminary Report of Resistance of Armor Bars and Gratings. Jan 1921. 



14 pp. , 4 figs. 



25. Report of Experiments with Model 2374 - Hydrovane Wing T. Feb 1921. 2 



pp., 1 fig. 



26. Supplementary Report on Vertical Steering Control of U.S. Submarines 



3-163-171 from Experiments with Model No. 2341. May 1921. 3 pp., 2 

 figs. 



27. Report of Tests of a Merchant Type Model Fitted with a Regenerative Pro- 



peller of the "Birkett" Type. Jun 1921. 4 pp., 2 figs. 



28. Report on the Comparison of Standardization Trial Data of 35-Knot 



Destroyers with Data Estimated from Results of Self -Propelled Models. 

 Jun 1921 . 16 pp., 10 figs. 



29. Report on Test of Torpedo Forms. Jul 1921. 7 pp., 3 figs. 



30. Report of Additional Tests with Twin Floats for Curtiss C.T. Seaplane. 



Jul 1921 . 7 PP- » 5 figs. Distributed only upon authorization of Curtiss Engineer- 

 ing Corporation. 



31. Report of Experiments with Junker JL-6 Twin Floats. Jul 1 921 . 7 PP- , 5 



figs. 



32. TS-1 Seaplane Floats (Twin) - Report of Experiments with Model#=2392. 



Sep 1921. 7 pp., 4 figs. 



1-2 



